feat: 주간 캘린더에 오늘로 이동 버튼 추가

FoodDiary/Presentation/Sources/Calendar/WeeklyCalendar/Components/WeeklyCalendarHeaderView.swift

@@ -17,6 +17,9 @@ final class WeeklyCalendarHeaderView: UIView {
         static let headerHeight: CGFloat = 44
         static let navigationSpacing: CGFloat = 8
         static let buttonSize: CGFloat = 44
+        static let todayButtonSpacing: CGFloat = 8
+        static let todayButtonCornerRadius: CGFloat = 12
+        static let todayButtonInsets = UIEdgeInsets(top: 4, left: 10, bottom: 4, right: 10)
     }
 
     // MARK: - Publishers
@@ -29,8 +32,13 @@ final class WeeklyCalendarHeaderView: UIView {
         nextTapSubject.eraseToAnyPublisher()
     }
 
+    var todayTapPublisher: AnyPublisher<Void, Never> {
+        todayTapSubject.eraseToAnyPublisher()
+    }
+
     private let previousTapSubject = PassthroughSubject<Void, Never>()
     private let nextTapSubject = PassthroughSubject<Void, Never>()
+    private let todayTapSubject = PassthroughSubject<Void, Never>()
 
     // MARK: - UI Components
 
@@ -41,6 +49,20 @@ final class WeeklyCalendarHeaderView: UIView {
         return label
     }()
 
+    private let todayButton: UIButton = {
+        let button = UIButton()
+        button.setAttributedTitle(
+            Typography.p12.styled("오늘", color: DesignSystemAsset.primary.color),
+            for: .normal
+        )
+        button.contentEdgeInsets = Constants.todayButtonInsets
+        button.layer.cornerRadius = Constants.todayButtonCornerRadius
+        button.layer.borderWidth = 1
+        button.layer.borderColor = DesignSystemAsset.primary.color.cgColor
+        button.isHidden = true
+        return button
+    }()
+
     private let previousButton: UIButton = {
         let button = UIButton()
         button.setImage(DesignSystemAsset.iconNext.image.withHorizontallyFlippedOrientation(), for: .normal)
@@ -80,6 +102,7 @@ final class WeeklyCalendarHeaderView: UIView {
 
     private func setupUI() {
         addSubview(monthLabel)
+        addSubview(todayButton)
         addSubview(navigationStack)
         navigationStack.addArrangedSubview(previousButton)
         navigationStack.addArrangedSubview(nextButton)
@@ -95,6 +118,11 @@ final class WeeklyCalendarHeaderView: UIView {
             $0.centerY.equalToSuperview()
         }
 
+        todayButton.snp.makeConstraints {
+            $0.leading.equalTo(monthLabel.snp.trailing).offset(Constants.todayButtonSpacing)
+            $0.centerY.equalToSuperview()
+        }
+
         navigationStack.snp.makeConstraints {
             $0.trailing.equalToSuperview()
             $0.centerY.equalToSuperview()
@@ -112,6 +140,7 @@ final class WeeklyCalendarHeaderView: UIView {
     private func setupActions() {
         previousButton.addTarget(self, action: #selector(previousTapped), for: .touchUpInside)
         nextButton.addTarget(self, action: #selector(nextTapped), for: .touchUpInside)
+        todayButton.addTarget(self, action: #selector(todayTapped), for: .touchUpInside)
     }
 
     // MARK: - Public Methods
@@ -125,6 +154,10 @@ final class WeeklyCalendarHeaderView: UIView {
         nextButton.alpha = isEnabled ? 1.0 : 0.3
     }
 
+    func setTodayButtonHidden(_ isHidden: Bool) {
+        todayButton.isHidden = isHidden
+    }
+
     // MARK: - Actions
 
     @objc private func previousTapped() {
@@ -134,4 +167,8 @@ final class WeeklyCalendarHeaderView: UIView {
     @objc private func nextTapped() {
         nextTapSubject.send()
     }
+
+    @objc private func todayTapped() {
+        todayTapSubject.send()
+    }
 }

FoodDiary/Presentation/Sources/Calendar/WeeklyCalendar/ViewModel/WeeklyCalendarViewModel.swift

@@ -147,6 +147,13 @@ public final class WeeklyCalendarViewModel {
             await loadWeekData(for: currentWeekBaseDate)
             await updateDateContent(for: state.selectedDate)
 
+        case .goToToday:
+            let today = calendar.startOfDay(for: Date())
+            currentWeekBaseDate = today
+            state.selectedDate = today
+            await loadWeekData(for: currentWeekBaseDate)
+            await updateDateContent(for: today)
+
         case .selectDate(let date):
             if !calendar.isDate(state.selectedDate, inSameDayAs: date) {
                 state.selectedDate = date
@@ -331,6 +338,7 @@ extension WeeklyCalendarViewModel {
         case requestPhotoAuthorization
         case goToPreviousWeek
         case goToNextWeek
+        case goToToday
         case selectDate(Date)
         case saveSelectedPhotos([any ImageAssetable])
         case handlePushNotification(AnalysisResultNotification)

FoodDiary/Presentation/Sources/Calendar/WeeklyCalendar/WeeklyCalendarViewController.swift

@@ -129,6 +129,12 @@ public final class WeeklyCalendarViewController: UIViewController {
             }
             .store(in: &cancellables)
 
+        headerView.todayTapPublisher
+            .sink { [weak self] in
+                self?.viewModel.input.send(.goToToday)
+            }
+            .store(in: &cancellables)
+
         weekGridView.dateTapPublisher
             .sink { [weak self] date in
                 self?.viewModel.input.send(.selectDate(date))
@@ -169,6 +175,15 @@ public final class WeeklyCalendarViewController: UIViewController {
             }
             .store(in: &cancellables)
 
+        viewModel.statePublisher
+            .map(\.selectedDate)
+            .removeDuplicates()
+            .receive(on: DispatchQueue.main)
+            .sink { [weak self] date in
+                self?.headerView.setTodayButtonHidden(Calendar.current.isDateInToday(date))
+            }
+            .store(in: &cancellables)
+
         viewModel.statePublisher
             .map(\.canGoToNextWeek)
             .removeDuplicates()